ADS 507165, Installation, Operation And Maintenance Manual

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Sensor Installation and Connection 5-51
8. Spot drill the pipe wall through the hole, install a ¼-inch x 2
¼-inch (M6 x 55-mm) anchor bolt, and secure the band to the
anchor bolt with a washer and nut.
Note: Make sure the submerged portion of the band is
flush with the pipe wall. If it is not, remove the band and
conform the band to the pipe.
9. Install a ¼-inch x 2 ¼-inch (M6 x 55-mm) anchor bolt, washer,
and nut below the flow surface 30 to 80 mm away from the
underwater sensor on each side. This will hold the sensor
securely against the pipe wall and prevent the end of the band
from twisting in the flow or catching debris.
10. Conform the portion of the band above the flow surface to the
pipe wall, and install an ¼-inch x 2 ¼-inch (M6 x 55-mm)
anchor bolt, nut, and washer every 12 to 24 inches (305 to 610
mm) up to the top of the band.
Completed ½-band mount in pipe
11. Measure the physical offset for the sensor by manually
measuring the depth of the flow from the bottom of the pipe to
the flow surface and then measuring the distance from the
nose
(i.e., front end at the pipe surface) of the sensor to the flow
surface. Subtract the second measurement from the initial
depth of flow to determine the physical offset.